Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5959001 | Pigment preparations | Klaus Walz, Gerd Schmitz, Michael Kressner, Udo Herrmann | 1999-09-28 |
| 5889065 | Pigment preparations | Stephan Kirchmeyer, Michael Kressner, Peter-Roger Nyssen, Christian Wamprecht | 1999-03-30 |
| 5855662 | Aqueous pigment preparations | Achim Brand, Roger Nyssen, Klaus Schubert, Erhard Schuffenhauer, Karlheinz Wieser +1 more | 1999-01-05 |